Self-locking nut



i Patented Jan. 5, 1 926.

PATENT OFFICE.

GENE A. FLOR ENCE, OF SAN SIMIEON, vCALIIFORNIA.

SELF-LOCKING NUT.

Application filed August 19, 1925. Serial- No. V51,244.

T0 all 10760722, 72mg/ cancer/n:

le .it known that I, EUczr-NE A. FLORENOE, a citizen' of the United States, residing at San Sinleon, in the county of San Luis Obispo and State of California, have invented neW and useful Improvements in Self-Looking Nuts, of Which the following is a specification; g

My presentinvention has reference to a simple, and cheaply constructed means for effectively looking a nut on a bolt When the nut has been screWed home on thebolt.

A further Object is the provision of a looking means for nuts, comprising camshaped dogs let in pockets on the inner face Df the nut and finding a fulcrum on the inner Walls of the pockets, Whereby the outer and pointed ends of the dogs Will be projected When the nut is beingscrewed home on the bolt and when the said dogs are brought into contact With a superstructure connected by i the nut ancl bolt'the same Will be canted to nlent With, the threads of the bolt and thereby effectively lock the Ilut from accidental turning on the bolt.

To the attanment of the foregoing the improvement resides in the construction, combination and Operative association of parts ch as is disclosed by the drawings Which accompany and which form part of this application.

In the drawings Figure 1' is a view with parts in section, illustrating the ai'l'angement ofl parts When the nut is being screWed home on the bolt.

Figure 2 is a rsimilar view but showing the nut screwed home on the bolt.

Figure 3 is an inner face view of the nut With the looking dogs pocketed therein.

Figure 11 is a perspective view of one of the looking dogs.

lVhen a bolt 1 is passed through a wooden structure 2 on one'face of the said structure is a metal plate vVVhen the bolt connects a metalsuperstructure the employment of the plate 3 is not required. lThe bolt 1, of

. course, passes through the plate 3.

Engaging the threadedend of the bolt l there is a nut 4L of-the usual construction. Thisnut has its inner face at diametrically opposite points, provided with pockets that intersect the bore 'of the nut. The pockets have their inner portions of substantially rectangular formatlon, as lndicated by the numeral', while the outer portions of the Walls of the pockets are flared awy from each other, as at 6. The inner Walls of the pockets are beveled, as at 7.

Designed to be received in each of the pockets there is a dog 8. Each dog has an inner rounded edge 9, a lower beveled edge providing a sharpened corner 10 and itsr outer edge arranged at an obtuse angle With respect to the edge 10. The last mentioned edge, 11, at its juncture With the rounded edge 9 is of course pointed.

By reference to Figure 1 of the 'drawings it Will be noted that the rounded edges 9 of the dogs contacting With the inclined inner Walls 7 of the pockets Will cause the canting of the dogs so that the referred to pointedy edge, ll, is disposed outward of the pocket. Because of the beveled edge 10 the nut may be freely screwed home on the bolt. VVhcn the nut is screWed fully home the edge 10 Will contact With the plate 3 of the superstruc-ture. This cants the dogs, bringing the same fully into the pockets as disclosed by Figure 2 of the drawings and When in such positions the sharpened edges 10 ofthe said dogs will effect a bitingengagement on the threads of the bolt 1.

By providing the pockets with the inclined or flared side Walls 6, the looking do'gs 5% are permitted lateral moveinent in the pockets. This perlnits of the nut being screwed entirely home before being positively locked on the bolt. This also permits of the employment of dogs of different lengths oi' for the taking up of any eXcess v length that may occur in the outer ends of i the dogs.

Having desoribed the invention, I claim A Imeans for looking a nut on a, bolt in Which said bolt is passed through a superstructure, said nut having its inner face provided With oppositely arranged pockets whose inner side Walls are parallel but whose outer side Walls are beveled away from each other and whose inner Walls are arranged at an inclination, a dog adapted to be received in each pocket, each of said dogs having an inner rounded edge, a lower beveled edge and an outer edge which is arranged at an out'a'ard angle from the beveled et ge, the

founded edge of the dog designed to be fllland canted to bring the beveled edge oi' the (l'umed on the innel' nelned Walls of the dogs into bit-ing engagement With the pocket and Whel'eby the ponted eol'nel' bethreads of the bolt When the llllt is 'fully 10 tween the last mentioned and l'ounded edge sel'ewed home.

5 of the dog's Will be pl'ojeeted through the In testilnony whel'eof I affix my Signature.

poekets When the nut is scl'ewed on the bolt and Will be ('Ontacted by the Superstrueture EUGEN E A. FLORENCE. 

